https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108404
--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Gaius Mulley from comment #5) > I've committed the patch above - since the source tree without it definitely > has a mismatched prototype. The exit issue needs to be resolved before > this PR can close. thanks, of course, it is not clear what the cause of hanging tests is - so it might be unrelated now (but too early to say).